<template>
  <Demo @hello="showHelloMsg" msg="你好啊" school="尚硅谷">
    <template v-slot:atguigu>
      <span>尚硅谷</span>
    </template>
  </Demo>
</template>

<script>
  import Demo from './components/Demo.vue';

  export default {
    name: 'App',
    components: {
      Demo: Demo
    },
    setup() {
      function showHelloMsg(value) {
        console.log(`你好啊，你处罚了hello事件，我收到的参数是：${value} !`);
      }

      return {
        showHelloMsg
      }
    }
  }
</script>